Apparatus for cutting roofing-sheets



A. S. SPEER. APPARATUS roa CUTTINGROOFING sums. APPUCATION FILED APR. 5| I919.

1,352,154, PatentedSept. 7, 1920.

3 SHEETS-SHEET Dave/22202":

fllaz'aiader did veer A. S. SPEER.

APPARATUS FOR CUTTING ROOFING SHEETS.

APPLICATIGN FILED APR. 5. I919.

PatentbdSept. 7, 1920.

3 SHEETS-SHEET 2.

In ve'ntor Alexander JCS veer, 1y M War/ d! A. S. SPEER.

APPARATUS FOR CUTTING 300mm; SHEETS.

APPLICATION FILED APR. 5, I919. 1,352,154.

PatentedSept. 7, 1920.

3 SHEETSSHEET 3.

Inner: ior: flzcxandcr 616m?" UNITED STATES PATENT OFFICE.

ALEXANDER S. SPEED, OF CHICAGO, ILLINOIS, ASSIGNOB TO THE ROOFING PATENT! COMPANY, A CORPORATION OF DELAWARE.

APPARATUS FOR CUTTING BObFING-SHEETS Patented Sept. 7, 1920.

Application filed April 5, 1919. Serial No. 287,819

1,352,154. Specification of Letters Patent.

To all whom it may concern:

the cutting and severingl operation. In the Be it known that I, ALEXANDER S. Srana, t

embodiment shown in e drawings I have a citizen of the United States, and resident of Chicago, Illinois, have invented certain new and useful Im rovements in Apparat us for Cutting R00 ng-Sheets, of which the following is a specification.

My resent invention relates to improvements' in apparatus for cutting roofing slabs or shingles from sheets of composite. material and the invention aims to provide a simple, economical and efficient machine which will out such shingles or slabs with a minimum waste of material.

The invention includes the novel features of construction and arrangement of parts hereinafter described and particularly defined by the appended claims.

An embodiment of my invention is illustrated in the accompanying drawings, in which,

Figure 1 is a plan viewof a form of machine constructed in accordance with my invention.

Fig. 2 is a side elevation, and

Fig. 3 is a sectional detail.

My present machine is designed more especially for cutting roofing slabs having diagonal edges, such as disclosed in an aplication filed by me in the U. S. Patent ffice on the 7th day of April,1919, Serial Number 288,035, and isherein shown as designed to out such slabs or shingles with rhomboidal projections on the lower edge or that edge of the shingle which is exposed when applied to a roof.

In the present drawings also the machine is shownfor convenience as of a width to handle a strip or sheet of roofing material sixty-four inches wide and to out therefrom two rows of slabs or shingles. Such a sheet of roofiing material is indicated in the drawings at 1 and it is fed between up er and lower slitting rollers 2 and 3, which slit it in a manner and for a purpose hereinafter more fully set forth. Thence the sheet passes between the u per and lower feed rollers hand 5 to the eed table 6. To sever the sheet into slabs havin one straight (upper) edge and one (lower serrated or tongued edge I provide alternately acting cutters having respectively straight and irregular edges and these cutters coact with a correspondingly alternately changing die face w ich is held stationary during shown a revolving cutter blade 6 mounted on a shaft 7 gournaled in the frame of the machine an provided with one edge straight, as shown at 6", and the other edge irre ular or shaped to provide the desired con guration on the other edge of the shingle, as shown at 6". Various means might e provided to secure alternately positioned dies to coact with the alternately actin cutter blades, but the arrangement which have deemed the simplest and herein shown is to provide a stationary straight shearing die or member 8 which may be conveniently removably supported by a die carrier 9 secured to or forming a part of the frame of the machine.

Thi die 8 coacts with the straight ed e 6 of the severing knife and also with tl ie advanced portions b of the edge 6". For coo erating with the recessed portions 19' of, t e edge 6 I provide removabledie menibers 10 which have curved shanks 10 hinged to lugs 9 on the bar 9 and these members 10 are connected by links 11 with arms 12 carried by a rock shaft 13.

Fast on this rock shaft is an arm 14 which is connected by pitman 15, with a crank arm 16 on shaft 17. This shaft 17 is continuously driven and so timed relative to the rotation of the cutter shaft 7 that the die members 10 are presented in position to coact with knife edge 6" and are withdrawn or dropped down out of the way to allow the strai ht die member 8 to coact with the straight ife'edge 6. I

It will thus be seen that at each half rotation of the cutter 6 the cooperating straight edges of the cutter and die cut the straight edges of shin les lying on both sides of the line of cut, an on the next half rotation the irregular cutting edge and die similarly form the I serrated or irregular edges of the shingles on opposite sides of the line of cut.

To produce the dia onal edges to the slabs hereinbefore referre to I arrange the cutter shaft diagonal or inclined to the feed and preferably in such relation to the sheet that the side edges of the sheet will coincide with or form the sides of the terminal ton ues on the serrated edge.

or shingles or slabs of some dimensions it is better to have the edge of the shingle onset slightl from the side wall of the tongue as in icated by the lines on the sheet of material where 1" designates the tongue and 1' the ofi'set edge referred to. The is accomplished by the slitters 2 and 3 above referred to which are segments of circles and which cooperate to form isolated slits in the sheet prior to the action of the cutters and which slits define the end edges of the individual slabs or shingles. The central slitters designated 2 and 2" respectively are arranged so as to cut slits in staggered relation asshown.

The various moving parts are connected up by gearing as shown diagrammatically and may be driven from any suitable source of ower, not shown.

aving thus described my invention what I claim is:

1. Apparatus of the character described comprising means for feeding a sheet of material, a air of alternately acting cutters having di erent rofiles, a stationary die for cooperating witl i one cutter, and supplemental die means movable into and out of juxtaposition to said stationary die for cooperating with the other cutter.

2. Apparatus of the class described comprisin a pair of alternately acting cutters of di erent profile moving in substantially the same path, and die means having alternately changing profile to cooperate with said cutters.

3. Apparatus of the class described comprising a rotary shaft, a pair of cutting blades carried thereby, having cutting ed es of different profile moving in substantia ly the same path, a stationary die cooperating with the edge of one blade, and sup lemental die means moved into and out o juxtaposition to said stationary die to cooperate with the other blade.

4. Apparatus of the class described comprising a' rotary shaft, a pair ofcutting lades carried thereby, one havin a straight blade and the other a notche blade, a

straight edged stationary die member-for 00- operating with said straight edged cutter,

and movable supplemental die'means cooperating with said strai ht edged die to coact with said notched bla%e.

5. Apparatus of the class described comprising a rotary shaft, a pair of cutting lades carried thereby, one having a straight blade and the other a notched blade, a straight edged stationary die member for cooperating with said straight edged cutter, a p uralit of supplementa die members, and means or moving them into juxtaposition to said strai ht edged die,to cooperate with the notched blade.

6. Apparatus of the character described comfprising sheet feedin means, a rotary sha t, a pair of cutting b ades carried thereby, one havin a straight edge and the other having its e ge provided with flaring recesses, said shaft being dis osed at an inclination to the line of fee corresponding to the inclination of the recess wall, a stationary die for cooperating with the straight edged cutter, and supplemental die means movable into and out of juxtaposition to said stationary die for coiiperating with the notched blade.

7. Apparatus of the class described comprising a straight edged cutter and a recessed cutter with means for bringing them alternately into cutting positioma straight edged stationary die cotiperating with said straight edged cutter, supplemental die means corresponding to the recesses of the second named cutter and hinged on fixed axes, and means for swinging said supplemental die means into juxtaposition to said stationary die to coiiperate with said recessed cutter.

In testimony whereof I aflix my signature.

ALEXANDER s. SPEER.

Witnesses I M. HARTMANN, A. J. BYRON. 

